Web Forms :: Set The ContentType Of An Image?
Apr 20, 2010How do I set the contentType of an image I download?
I only need jpg, png and gif.
I want to set the contentType immediately after upload.
Similar Messages:
Web Forms :: Uploading A File To Server - Use ContentType To Filter Only Image Files
Oct 12, 2010I am using VB to upload image files to my server but am having problems. How can I use the ContentType to filter only image files? This is my code for my upload button which does not seem to be working. I can only upload bmp files:
[Code]....
Also, how can I show the user the image they uploade
Setting ContentType = "image/tiff" And Sending An Image Is Not Working In IE?
Jan 20, 2011I need to send an image (as a downloadable file) from an ASP web page. It is working correctly in every browser except for IE (all versions).
Here is the server side code:
bool export = Request.QueryString["Export"] != null;
if (export)
{
byte[] allBytes = File.ReadAllBytes(@"C:MyImage.tif");
Response.ContentType = "image/tiff";
Response.AddHeader("content-disposition", "attachment; filename="MyImage.tif"");
Response.OutputStream.Write(allBytes, 0, allBytes.Length);
Response.OutputStream.Flush();
Response.End();
return;
}
And here is the JavaScript:
$('#ExportFrame').attr('src', 'Default.aspx?Export=true'); // ExportFrame is an iframe
In IE, I keep getting an error saying "Internet Explorer cannot download Default.aspx from localhost". I thought it might be an issue with loading it in an iframe element, but redirecting to the URL is not working either. The really odd thing is that going to the URL (/Default.aspx?Export=true) does not work the first time, but works every time after that. Again, this works in every browser I've tried except IE.
Update:
The aspx page has the following code to keep the page from getting cached:
// Never cache this page
Response.CacheControl = "no-cache";
Response.AddHeader("Pragma", "no-cache");
Response.Expires = -1;
Removing the first 2 lines and leaving only Response.Expires = -1 resolved the issue.
Web Forms :: How To Set Page Title For Response.ContentType = "image/jpeg"
Sep 17, 2010how can i set Title for a page with Response.ContentType = "image/jpeg" ?
View 2 RepliesWeb Forms :: PostedFile.ContentType Value For .txt Or .csv File?
Aug 31, 2010I would like to validate the .txt or .csv file that is uploaded using PostedFile.ContentType:
<asp:FileUpload ID="fileUpload" runat="server" Width="525px" />
Is "text/plain" the correct value?
if (fileUpload.PostedFile.ContentType != "text/plain") ...
Web Forms :: MyFileInput.PostedFile.ContentType Equals Null?
Nov 1, 2010Simple upload has been working for quite a while now, yet it seems to all the sudden not work (but only for specific file types). mp3 can upload, flv cannot (remember, this was all working before).After a little debugging, I discovered that a portion of my code is never being entered because I test something first:
[Code]....
I have discovered that resourceMediaFile.PostedFile is not null, resourceMediaFile.PostedFile.ContentLength is the correct size for the uploaded file, yet resourceMediaFile.PostedFile.ContentType is now null. I've literally had this work over 1,000 times with several files (including the one I'm testing with) and it consistently came back "application/flv".
What would cause ContentType to be null if the other attributes are not?
Response.ContentType Sporaticly Changes For IE8 Using MVC?
Jan 6, 2010We are running ASP.NET MVC on IIS6. We have started to notice a problem with IE8 clients. Almost all the time, the ContentType returned is 'text/html' but occasionally, it will be returned as 'application/xhtml+xml'. This is causing IE8 to try and download the file instead of rendering the contents in the browsers.
Where is the ContentType set in the ASP.NET/MVC pipeline?
Configuration :: Set ContentType In VirtualFile?
Oct 15, 2010I'm using VirtualPathProvider and VirtualFile to send some Assembly Resource. The files are plain text files and I need to garantee that MIME "application/xml", "text/plain" or something like gets to the client Content-Type Response.Header.
I've tried setting:
[Code]....
But, still, "application/octet-stream" reaches the client side.
how to set ContentType on a VirtualPathProvider/VirtualFile scenario?
SQL Server :: Get The Doc Type And Contenttype Of A File From The Filestream Field?
Dec 23, 2010Can we get the doc type and contenttype of a file from the filestream field?
View 2 RepliesAJAX :: ContentType Header Attribute Occasionally Not Present In Web Method
Jul 23, 2010I am having a simple web service method which returns JSON serialized response. The attribute to web method is
[WebMethod, ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
As security of the return data is not a problem, I am Get enabling the HTTP response. On the client (browser) end, my code is as below
[Code]....
Everything works smoothly but occasionally on the web server's event viewer, I see the following error
"Request format is unrecognised for URL unexpectedly ending in /SomeWebServiceWebMethod"
After fiddling through the request headers using Fiddler, I figured out that if I make direct request to the webservice link, contentType header attribute is missing and that is what throws the error. There is a good post by scott guthrie explaining this. I am not able to replicate the issue and not sure what removes the contentType attribute from the request header occasionally.
C# - How To Get Response.ContentType / "text/csv" Causes XML Error
Aug 5, 2010I've got an odd issue.I'm creating a DataTable type my application then converting it to a CSV so the user can download the data.
I set the content type like this:
context.Response.Clear();
context.Response.ContentType = "text/csv";
context.Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + ".csv");
var responseBuilder = new StringBuilder(data.Rows.Count * data.Columns.Count * 30);
Now, this works well for all data sizes in my development environment, and for small amounts of data on my production environment, but when it gets to a larger size (say, more than about 4000 rows) on production Firefox gives me the error:
XML Parsing Error: no element found
Web Forms :: Display Image In Image Conrtrol When User Select Image From Selection_Dialogbox
Sep 27, 2010 I want to achive on functionallity like below.
I want to Dispaly image after image selection.so Users can see image at that moment.
Web Forms :: Image Display / Preview Image Whenever Browse An Image Beside It In An Imagecontrol?
Feb 1, 2010I have a fileupload control in a contentplaceholder in a masterpage. I have to preview the image whenever I browse an image beside it in an imagecontrol.
My application is running on a different server .So I can't give the filepath of my local system.
Also I don't want to store the image in any location and i'm not supposed to use any session variable to pass it to generic handler.
Web Forms :: To Set A Default Image For Image Control , When There Is No Image Availble?
Jan 15, 2011I am trying to put a default image in an Image control in asp.net and it should show that particular image on the page when no other image is assigned or no image available in Database.
View 1 RepliesWeb Forms :: How To Display Image In Image Component After Uploading An Image
Mar 22, 2011in my aspx page i have a file upload control and one image component...i want to display the image uploaded in the image component..
View 4 RepliesWeb Forms :: Display Image In Image Control From Image Path
Oct 1, 2010I know how to display an image in gridview from image path in database. Now, I want to display an image in an asp.net image control from image path in database. Can anyone point me to a tutorial? I haven't been able to find one that explains how to do it when I don't know what the image path will be. The images are in the root folder.
View 35 RepliesGetting An Error In Dreamweaver / <%@ Page Language="C#" ContentType="text/html" ResponseEncoding="utf-8" %>?
Nov 13, 2010This page contains the following errors:
error on line 1 at column 2: StartTag: invalid element name Below is a rendering of the page up to the first error.
Why am i getting this error in while browsing a page from dreamweaver? Here is my source code:
<%@ Page Language="C#" ContentType="text/html" ResponseEncoding="utf-8" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">; <html xmlns="w3.org/1999/xhtml">; <head><link rel="stylesheet" type="text/css" href="test.css"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> </body> </html>
AJAX :: Async File Upload Control - Check File Contenttype Before File Upload Starts?
Jan 13, 2010I am using the async file upload control to upload to a image file. I want the user to upload only jpg files. And for that I am checking the uploadedfile content type in server side, after the upload complets. I wanna check this, before upload starts. There is one javascript method
function startUpload(sender, args){}
but how to access the content type of the file selected by user.
Web Forms :: Display Thumbnail Image In DataList Image Gallery And OnClick Display Original Image
Oct 12, 2012I need to develop image gallery
Image saved in Folder called Images and image Name , Description saved in Database Table Images.
On Deafault.aspx
Thubnail images should display with out any change in Quality i.e by DataList Control
On Click of Thubnail images Fullview of image with width and height same as image width and height
Next, Previous, Close Buttons on Popup window
AJAX :: Uploading Image With AsynFileUpload And Changing Image Url Of An Image Control?
Jun 7, 2010I Used AsyncFileUpload(one of Ajac Control Toolkit Controls) to Uploading User's Image. this works well. But i want to change the image url of an image contorl to uploaded image url. how can i perform that? I put Image control in a Update Panel:
[Code]....
in C# code I wrote these:
[Code]....
But it does not work. Image is like Previous. Note that ImageOperations.ResizeFromStream() method resizes and saves the image to a specefic folder. actually I should trigger a Postback to Update the Update Panel but How to do that. I usedUpdatePanelNew.Update(); but it does not work!
Web Forms :: Display Image Immediately After User Browse The Image In Fileupload Control?
May 25, 2010 want a file upload control for uploading image in which when user select the image ,
i want to show it in image control after he finished browsing the image.
Forms Data Controls :: Changing Image In Image Button Column In A Datagridview?
Oct 21, 2010Just wondering if anyone has ever managed to find a way to have a datagridview image button column in a template field which display different images on different rows depending on some data element in the row. Our application needs to display a series of fees charged against an account column which will be either less then 500, 500 to 1000 or >1000. Some of those fees are charged at a full rate, others at a partial rate, and some are not charged at all. The user would like to see a simple 3-state graphic which would convey the simple info: full-charge, partial-charge, or no-charge. Sounds easy enough but I've not yet managed to find a way to do this. Every time I attempt to modify the individual cell's graphic it seems to want to change the graphic for all the rows.
View 3 RepliesForms Data Controls :: Open An Image In New Window On Clik Of Image Icon
Sep 17, 2010I bind the Image to Grdview Column like below
[Code]....
Now how i add the clik event to image control and open the image in New window any Idea?
Forms Data Controls :: How To Reference Image Location Stored In DB From An Image Control
Apr 20, 2010I'm not even sure if this is the correct approach for this -
I have a DB that stores information, as well as a location to where images are stored
ie ProductImage = ~/ProductImages/BulkRetail.JPG
I'm using a repeater to list all the products, which works fine for all the labels I use but not for the image location. I'm using something like this, but it doesn't work:
<asp:Image runat="server" ImageAlign="Left" ImageUrl='<%# Eval("ProductImage") %>' />
Web Forms :: Display Image In Image Control After Upload On Server Then Save To Database
Apr 16, 2013I have filed image type varbinary
I want upload image and show then with click button save
store in db